ohm to attoohm
Convert ohm (Ω) to attoohm (aΩ). Use an editable electrical resistance converter, conversion formula, and reference table.
1 Ω = 1e+18 aΩ
Conversion formula
One ohm equals 1e+18 attoohm. Multiply your value in ohm by this factor to get attoohm. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 ohm:5 × 1e+18 = 5e+18 aΩ
Conversion table
| ohm (Ω) | attoohm (aΩ) |
|---|---|
| 0.01 | 1e+16 |
| 0.1 | 1e+17 |
| 1 | 1e+18 |
| 2 | 2e+18 |
| 5 | 5e+18 |
| 10 | 1e+19 |
| 25 | 2.5e+19 |
| 50 | 5e+19 |
| 100 | 1e+20 |
| 1000 | 1e+21 |
About these measurements
Resistance relates voltage to current for a given element.
The base reference used here is the ohm. One ohm is 1 base units; one attoohm is 1e-18 base units.
Important distinctions
Resistance and impedance are not the same physical quantity.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert Ω to aΩ?
Multiply the quantity in Ω by 1e+18. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the attoohm to ohm converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
